Patent US2641841A successfully refreshed from Google Patents.
US2641841A
Expired / Lapsed
US
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Electromagnetic gauging equipment
Assignee: Niles Bement Pond Co
•
Filing: 1948-01-28
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Granted: 1953-06-16
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Expires: 1968-01-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:12
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/10; G01B7/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US868813A
Cited
US1946924A
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US2146442A
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US2115351A
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US2177009A
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US2281453A
Cited
US2308033A
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US2381990A
Cited
US2438506A
Cited
US2503720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |